Planooraph co



L. H. DHAEGER.

DISCHARGE SPOUT FOR CONCRETE MIXEHS.

APPLICATION mu) SEP'LZ'I. 19H.

1,308,148. Patented July 1, 1919.

r (MM, 1 5* AT ORA/E THE COLUMBIA PLANUORAPH c0, WASHINGTON, n c

UNITED STATES LLOYD HARRY DRAEGER, OF MILWAUKE PATENT OFFICE.

E, WISCONSIN, ASSIGNOR TO '1. L. SMITH DISCHARGE-SPOUT FORCONCRETE-MIXERS.

1.308 148. Specification of Application filed September 24, 1917.

To all whom it may concern:

Be it known that I, LLOYD H. DRAEGER, a citizen of the United States,and resident of Milwaukee, Milwaukee county, Wisconsin, have inventednew and useful Tmprovements in Discharge-spouts for Concrete-Mixers, ofwhich the following is a description, reference being had to theaccompanying drawings, which are a part of this specification.

This invention has for its object to pro vide a discharge spout forconcrete mixers which will be readily changed from its inner dischargingposition to its outer idle po sition, but which will become positivelylocked in its inner position against any tendency to swing owing to theweight of the material dropped therein.

Another object of the invention is to simplify the construction of thedischarge spout supporting and operating means whereby it may beinexpensive to manufacture.

Another object of the invention is to so mount the operating shaft thatit is capable of sliding through the parts attached thereto in orderthat the hand lever may be located either on one side of the machine orthe other.

lVith the above and other objects in view, the invention consists in thedischarge spout for concrete mixers as herein claimed and allequivalents. y

Referring to the accompanying drawings in which like characters ofreference indicate the same parts in the different views:

Figure 1 is a side view of a discharge spout constructed in accordancewith this invention, one of the supporting brackets having been removed;

Fig. 2 is an end view thereof; and,

Fig. 3 is a plan view.

In these drawings the concrete mixing drum 10 is shown in dotted linesand two an 1e iron uprights 11 are positioned at the end thereofateither side of the discharge opening.

Angular brackets 12 are bolted or otherwise securedto the uprights 11andhave tubular projections 13 at" one end forming bearings for anoperating shaft 14, while their other en'ds extending toward each otherterminate in half bearings with caps 15 secured thereto to receive theends of apivot 'pinio of a spout hanger 17. The spout member 18 isatrough-like metal chute with 'ment of the toggle joint,

line of centers accidental] Let e s Pat n Patented July 1,1919.

Serial No. 192,933.

an arch 19 connecting its sides and bolted or riveted to the hangercasting 17.

On the operating shaft 141 between the bearings 13 is clamped a casting20 which preferably consists of radial arms, one bearing a counterweight21, another constituting a stop 22 for engaging a shoulder 23 on thehanger casting 17, and two others arranged side by side constitutingtoggle arms 2% with a. link 25 pivoted between them. The link 25 is alsopivoted between the side checks of the hanger casting 17.

The movements of the discharge spout are accomplished by means of ahandle 26 on the operating shaft 14, the turning of said shaft by meansof the handle serving to swing the hanger 17 and its spout by means ofthe toggle connections 24 and 25.

The discharge spout 18 is suspended from its pivotal connection with thebrackets 12 so as to be capable of swinging from its outer position,shown in dotted lines in Fig. 1, to its inner position, shown in fulllines, and in doing so the knuckle joint, in the toggle formed by thearms 24: and the link 25, passes beyond the line connecting the centerof shaft 14. with the pivotal connection of the link with the hanger.The tendency of the spout to swing outwardly, due to the weight of thematerial dropped into the inner end thereof, is resisted by thisarrangefor, with the knuckle beneath such line of centers, the swingingaction of the spout could only be permit-ted by the. arms 24 turningfarther in a clockwise direction, as viewed in Fig. 1, but furtherturning in this direction is prevented by the stop 22 being inengagement with the shoulder 23. The discharge spout is thereforeautomatically and positively locked in its innerdischarge position.There is no likelihood of vibration or jar carrying the knuckle joint ofthe toggle beyond the y for the weight 21 its pivotal center in themovement of the parts to the inner osition of the discharge spout andis, there ore, in position to hold the stop 22 against the stopshoulder.

The return of the discharge spout to its outer position is effected by amovement of the handle 26 in the direction of the arrow in Fig. 1, thuslifting the weight 21 over its pivotal center and swinging the stop 22pas sed over away from shoulder 23 while lifting the arms 24 and thetoggle knuckle so as to pull upwardl on the hanger and swing the spoutto the position shown in dotted lines. The counterweight 21 swings fromthe position ahovc its pivotal center to a position of maximumcounterweighting effect as the spout swings from its inner position, inwhich its center of gravity is approximately beneath its pivotal center,to its (interpositiou. in whleh it requires such maximumcounterweighting effect in order to be bal: anced thereby. Thisarrangement makes it easy to swing the discharge spout from one positionto another. In the outer position of the discharge spout a beveled lug27 on the edge of the hanger 17 engages the casting .20 to limit themovement of the parts.

The operating shaft 14 is preferably of such a length that at one end itprojects beyond the drum in order that the handle 26 mav be located in aposition which will enablb the use of a connecting rod 28 leadingtherefrom to the other end of the drum. This permits the operation ofthe discharge spout from the feeding end of the drum and in order thatsuch control may be easily changed from one side of the drum to theother the casting 20 is preferably clamped on said shaft by means of asplit collar 29. The handle 26 may thus be removed from one end of theshaft 14 and with the split collar released by loosening its clampingbolts the shaft 14 may be moved endwise through its bearings so that itsother end projects beyond the drum and the handle may then be attachedto such PlOjGCtlng end.

The discharge spout of this invention is simple in its construction andis strong and durable, with its positive automatic locking engagementaccomplished by the simple and effective mechanism for swinging it. Thearch connecting the sides of the troughshaped spout member permits ofthe use of the sin le hanger with a corresponding simplification of thestructure of the supporting and operatin parts.

What I claim as new and desire to secure by Letters Patent is:

1. A discharge spout for concrete mixers and the like, comprising apivotally suspended spou-t member, an operating shaft, a toggleconnection between the operating shaft and the spout, and a stop on t eoperating shaft engaging the spout member for limiting the movement ofthe tog 1e connection after it has passed its straig t line position.

2. In a discharge spout for concrete mix ers and the. like, a pair ofsimilar bracket members adapted for connection with suitable supportsand forming bearings at their opposite ends, a spout member, an archextending across the spout member, a hanger member on the archpivotally' mounted in and between the bearings at one end of thebrarkcts, an opcratii'ig shaft mounted in the bearings at the other endof the brackets, means for turning the operating shaft, a crank on theoperating shaft, and a link connecting the crank with the hanger member.3. In a discharge spout for concrete mixers and the like, a pair ofsimilar bracket members adapted for connection with a suit able supportand having bearings at one end thereof and their other ends extendinglaterally toward each other and forming bearings, a spout member, asingle hanger member having connection with the edgesof the spout memberand pivotally mounted in and between the last mentioned bearings of thebracket members, an operating shaft journaled in the other bearings,means for turning the operating shaft, a crank on the op erating shaftbetween its bearings, and a link connecting the crank with the l'iangermember.

4. A discharge spout for concrete mixers, comprising a pivotallvsuspended spout member, a suitably mounted operating shaft, a toggleconnection between the operating shaft and the spout member, a stop onthe operating shaft engaging the spout member, and a counterweight onthe operating shaft.

5. In a discharge spout for concrete mixers and the like, a pair ofbrackets adapted for attachment to suitable supports, each brackethavinga sleeve formed on one end thereof and its other end extending towardtheother bracket and terminating in a half bearing, caps on the halfbearings, a hanger having a pivot pin with its ends mounted between thehalf bearings and their caps, an operating shaft journaled in thesleeves, a member secured to the operating shaft between the sleeves andprovided with radially extending arms, a counterweight on one arm, ashoulder on the hanger engaged by an other arm to form a stop, a linkpivotally connected to other arms and to the hanger, and a spout membercarried by the hanger.

6. In a discharge spout for concrete mixers and the like, a pair ofbrackets adapted to be attached to suitable supports, a hanger pivotallysupported by the brackets, an operating shaft journaled through thebrackets. a member releasablv clamped on the op erating shaft betweenthe brackets and having link connection with the hanger, said operatingshaft bein slidable through the brackets and the sai member so as toproject at either end, a handle detachably connected with the projectingend ofthe operating shaft, and a spout member carried by the hanger.

7. Ina discharge spout for concrete mixers and the like, a pivotallymounted spout member adapted to swing from an inner discharge positionto an outer idle position, an operating shaft, .a-toggle connectionbetween the operating shaft and the spout, a stop limiting the movementsof the toggle connection When it has passed its strai ht line positionfor locking the spout mem r in its discharge position, and acounterweight having connection With the operating shaft and extendingin an approximately horizontal position to exert a maximumcounterweighting eflect for counterweighting the spout in its outerposition and adapted to pass over its vertical position to hold the stopin its engagement in the inner position of the spout.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

LLOYD HARRY DRAEGER.

Witnesses:

RAYMOND C. KRUEGER, FRED J. PURCELL.

Gopies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. G."

